KMAN Publication Inc. Journal of Poultry Sciences and Avian Diseases 2981-135X 4 Serial Number 13 2025 08 22 CT Anatomy and Gross Anatomical Study of the Scleral Ring in the Common Buzzard (Buteo buteo) CT Anatomy and Gross Anatomical Study of the Scleral Ring in the Common Buzzard (Buteo buteo) 1 12 10.61838/kman.jpsad.139 EN Journal Article <p>The avian scleral ring is a critical structure for ocular biomechanics and taxonomic studies, yet its morphology in raptors remains understudied. This study investigated the scleral ring in the common buzzard (<em>Buteo buteo</em>) using a multimodal approach: CT, micro-CT, radiography, and anatomical dissection. Analysis of five adult specimens revealed a semi-hyperbolic ring composed of 15 quadrilateral ossicles arranged in a Type B pattern (one <em>plus</em> and one <em>minus</em> excellent ossicle), with a mean anterior-posterior to width ratio of 1.32. Micro-CT imaging showed that 53.36%±1.89 of each ossicle’s volume was compact bone, suggesting biomechanical reinforcement against flight-induced stresses. The ring exhibited complete anatomical independence from adjacent cranial bones (frontal, jugal, lacrimal) and perfect bilateral symmetry (<em>p</em>&gt;0.05). High-resolution micro-CT scans resolved microscopic articular interfaces and trabecular architecture non-destructively, validating its utility for delicate orbital studies. These findings provide morphometric benchmarks for comparative anatomy in Accipitriformes, demonstrate the efficacy of non-invasive imaging for species differentiation, and offer diagnostic criteria for ocular trauma management. By integrating macroscopic dissection with advanced tomography, this work establishes a framework for evolutionary, clinical, and conservation-focused studies of avian visual systems.</p> https://www.journals.kmanpub.com/index.php/jpsad/article/download/6068/11600